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United States Patent | 6,211,825 |
Deng | April 3, 2001 |
A dual-notch loaded microstrip antenna has a single-medium substrate, a metal layer and a microstrip antenna layer, wherein the microstrip antenna layer of the microstrip antenna is etched into a double dual-notch or a single dual-notch structure. The microstrip antenna layer and the metal layer adhere respectively to opposite sides of the single-layer substrate, wherein the metal layer works as the electrical ground. The single-layer substrate contains a penetrating opening whose diameter and location are predetermined. The task of transmitting and receiving dual-band or multi-band signals is carried out by feeding the microstrip layer with signals from a connector, such as a coaxial connector, through the penetrating opening.
Inventors: | Deng; Sheng-Ming (Taipei, TW) |
Assignee: | Industrial Technology Research Institute (Hsinchu, TW) |
Appl. No.: | 448019 |
Filed: | November 23, 1999 |
Sep 03, 1999[TW] | 088115160 |
Current U.S. Class: | 343/700MS; 343/749; 343/830 |
Intern'l Class: | H01Q 001/38 |
Field of Search: | 343/700 MS,749,767,770,829,830,846,848,849 |
5216430 | Jun., 1993 | Rahm et al. | 343/700. |
5410323 | Apr., 1995 | Kuroda | 343/700. |
5646634 | Jul., 1997 | Bokhari et al. | 343/700. |